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In a stay-behind operation, a country places secret operatives or organizations in its own territory, for use in case an enemy occupies that territory. If this occurs, the operatives would then form the basis of a resistance movement or act as spies from behind enemy lines. Small-scale operations may cover discrete areas, but larger stay-behind operations envisage reacting to the conquest of whole countries. Stay-behind also refers to a military tactic whereby specially trained soldiers let themselves be overrun by enemy forces in order to conduct intelligence, surveillance, target acquisition, and reconnaissance tasks often from pre-prepared hides. Stay-behind operations of significant size existed during World War II. The United Kingdom put in place the Auxiliary Units. Partisans in Axis-occupied Soviet territory in the early 1940s operated with a stay-behind element. During the Cold War, the North Atlantic Treaty Organization (NATO) coordinated and the Central Intelligence Agency (CIA) and the British Secret Intelligence Service (SIS) helped to set up clandestine stay-behind networks in many European countries, intending to activate them in the event of Warsaw Pact forces taking over an area. According to Martin Packard they were "financed, armed, and trained in covert resistance activities, including assassination, political provocation and disinformation". These clandestine stay-behind organisations (SBOs) were created and run under the auspices of intelligence services and recruited their agents from amongst the civilian population. Specially selected civilian stay-behind networks or SBOs were created in many Western countries, including Italy, the Netherlands, Belgium, Luxembourg, France, Germany, Switzerland, Norway, Austria and others, including Iran. They prepared to organize resistance, sabotage and intelligence-gathering in occupied (NATO) territory. The most famous of these clandestine stay-behind networks was the Italian Operation Gladio, acknowledged by Italian Prime Minister Giulio Andreotti on October 24, 1990.

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Related concepts (4)

Operation Gladio

Operation Gladio was the codename for clandestine "stay-behind" operations of armed resistance that were organized by the Western Union (WU) (founded in 1948), and subsequently by NATO (formed in 1949) and by the CIA (established in 1947), in collaboration with several European intelligence agencies during the Cold War. Although "Gladio" specifically refers to the Italian branch of the NATO stay-behind organizations, "Operation Gladio" is used as an informal name for all of them.

Partisan (military)

A partisan is a member of an irregular military force formed to oppose control of an area by a foreign power or by an army of occupation by some kind of insurgent activity. The term can apply to the field element of resistance movements. The most common use in present parlance in several languages refers to occupation resistance fighters during World War II, especially under the Yugoslav partisan leader Josip Broz Tito.

Counterinsurgency

Counterinsurgency (COIN, NATO spelling Counter-insurgency) is "the totality of actions aimed at defeating irregular forces". The Oxford English Dictionary defines counterinsurgency as any "military or political action taken against the activities of guerrillas or revolutionaries" and can be considered war by a state against a non-state adversary. Insurgency and counterinsurgency campaigns have been waged since ancient history. However, modern thinking on counterinsurgency was developed during decolonization.